[CMake] undefined reference to 'pthread_create'

J Decker d3ck0r at gmail.com
Thu Feb 4 12:05:54 EST 2016


Probably didn't previously need pthreads until you updated to use
C++11 features which brings in pthreads in the deadstart code...


On Thu, Feb 4, 2016 at 8:53 AM, rpelapur at archlinux.info
<rpelapur at archlinux.info> wrote:
> I believe that doesn't have anything to do with C11 flags. You are just
> missing the link to the pthread library. I could be wrong.
>
> Try and add this to your cmake file:
>
> find_package (Threads)
>
> target_link_libraries (myexecutable/lib ${CMAKE_THREAD_LIBS_INIT})
>
>
>
> Sent from my iPhone
>
> On Feb 4, 2016, at 10:42 AM, Aaron Boxer <boxerab at gmail.com> wrote:
>
> Hello,
> I have a cmake project that uses C++11 threads.
> I have added the lines
>
> set (CMAKE_CXX_STANDARD 14)
> set(CMAKE_CXX_STANDARD_REQUIRED ON)
>
>
> CMAKE version is 3.2.2, running on Ubuntu.
>
> When I try to build, I get the error
>
> undefined reference to `pthread_create`
>
> Any ideas on how to fix this?
>
> Thanks!
> Aaron
>
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